Development of an auto-doffer for covering machines. V. Control of autonomous vehicle for doffing operation (Japanese)

Autonomous vehicle is developed corresponding to conventional type covering machine which has slightly indented spindles and curved frames. It is controlled to stop at proper position for doffing operations. A pair of laser displacement sensors enable the autonomous vehicle to obtain high positioning accuracy. This is effective in improvi..

Spinning of lyocell

The rotor and ring spinning of lyocell, solvent-spun cellulose fibre, into yarns is compared with the spinning of cotton. It is shown that lyocell requires less energy per kg of yarn, uses less raw material and that it does not require any special effort if the fibre and machines are optimised. Information is also provided on the benefits..

The Vision Shield - system to detect and separate foreign matter

The Vision Shield manufactured by Jossi of Switzerland detects and removes contaminations at a very early stage in the blowroom, before they are spread over large lots of yarn. Fibres too small to be detected by cleaners on the cone winders can be identified and removed.

Zellweger Uster Systems for Optimising Spinning Quality.

Zellweger Uster's Uster Tester 4 (UT 4) modular yarn evenness testing machine features a new capacitive sensor that offers 10 percent more accuracy in testing staple fiber yarns. Two optical sensors measure such parameters as seed coat fragments, yarn shape, and yarn diameter. The UT 4-SX records and stores all data for report generating ..

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